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194 results on '"Sethupathi, Sumathi"'

4. Acid-Treated Spent Coffee Bean Biochar for Nitrate and Nitrite Adsorption

Author

Tan, Sin-Ying, Sethupathi, Sumathi, Leong, Kah-Hon, Ahmad, Tanveer, Pisello, Anna Laura, Editorial Board Member, Hawkes, Dean, Editorial Board Member, Bougdah, Hocine, Editorial Board Member, Rosso, Federica, Editorial Board Member, Abdalla, Hassan, Editorial Board Member, Boemi, Sofia-Natalia, Editorial Board Member, Mohareb, Nabil, Editorial Board Member, Mesbah Elkaffas, Saleh, Editorial Board Member, Bozonnet, Emmanuel, Editorial Board Member, Pignatta, Gloria, Editorial Board Member, Mahgoub, Yasser, Editorial Board Member, De Bonis, Luciano, Editorial Board Member, Kostopoulou, Stella, Editorial Board Member, Pradhan, Biswajeet, Editorial Board Member, Abdul Mannan, Md., Editorial Board Member, Alalouch, Chaham, Editorial Board Member, Gawad, Iman O., Editorial Board Member, Nayyar, Anand, Editorial Board Member, Amer, Mourad, Series Editor, Ksibi, Mohamed, editor, Sousa, Arturo, editor, Hentati, Olfa, editor, Chenchouni, Haroun, editor, Lopes Velho, José, editor, Negm, Abdelazim, editor, Rodrigo-Comino, Jesús, editor, Hadji, Riheb, editor, Chakraborty, Sudip, editor, and Ghorbal, Achraf, editor

Published
2024
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39. Preparation of Palm Oil Mill Effluent Sludge Biochar for the Treatment of Landfill Leachate

Author

Bashir Mohammed J.K., Wong Jing Wei, Sethupathi Sumathi, Aun Ng Choon, and Wei Lim Jun

Subjects
Engineering (General). Civil engineering (General), TA1-2040
Abstract

In recent years, landfilling has emerged as the most widely employed method for municipal solid waste disposal especially in ASEAN countries. However, due to the presence of refractory compounds in stabilized landfill leachates which results in the inefficiency of biological treatment methods, other alternatives such as physico-chemical treatment methods are being look into and adsorption method seems promising. Nevertheless, the raw materials used for the preparation of adsorbents in the industry are usually non-renewable materials thus resulting in high operational costs. Therefore, present study evaluates the ability of palm oil mill effluent sludge (POMES) derived biochar in the treatment of chemical oxygen demand (COD), color and ammoniacal nitrogen (NH3-N) from stabilized landfill leachate obtained from Sahom landfill located in Kampar, Perak, Malaysia using response surface methodology (RSM) technique. It was found that the removal efficiency of the leachate pollutants by POMES biochar is highly dependent on the production process such as temperature and holding time. In this study, 44.26% of COD, 70.20% of color and 30.56% of NH3-N were removed from stabilized landfill leachate via optimized biocharat452°C temperature and 66 minutes of holding time.

Published
2017
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48. Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Author

Muhammad Sohail, Loong Kong Leong, Muhammad Younas, Sethupathi Sumathi, and M. Jk Bashir

Subjects
Environmental Engineering, Sorbent, Chromatography, Materials science, 02 engineering and technology, Microporous material, 010402 general chemistry, 021001 nanoscience & nanotechnology, Co2 adsorption, 01 natural sciences, 0104 chemical sciences, Adsorption, Chemical engineering, Environmental Chemistry, Absorption (chemistry), 0210 nano-technology, General Agricultural and Biological Sciences
Abstract

In the last few decades of industrialization, the concentration of CO2 in the atmosphere had increased rapidly. Different organizations have invested considerable funds in research activities worldwide for CO2 capture and storage. To date, significant work has been done and various technologies have been proposed for CO2 capture and storage. Both adsorption and absorption are promising techniques for CO2 capture, but low-temperature adsorption processes using solid adsorbents are the prevailing technique nowadays. In this review paper, a variety of adsorbents such as carbonaceous materials, dry alkali metal-based sorbents, zeolites, metal–organic frameworks (MOFs) and microporous organic polymers (MOPs) have been studied. Various methods of chemical or physical modification and the effects of supporting materials have been discussed to enhance CO2 capture capacity of these adsorbents. Low-temperature (

Published
2016
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